Why does the Almighty need a mediator?
I think the mediator idea was used in early Egyptian or Sumerian temples, this was a way to make the priests useful and give them power over the people. I don't have proof of this yet, but if one studies Egyptian history there were times when the priest had more power then even the Pharoah.
In 1922 the WT was saying that the Church (the JW Church that is) constitutes part of the mediator.
w1922 4/15 p.122 The Mediator
"Then we might with propriety say that the mediator of the new covenant is Christ Jesus. He is the one who provides the ransom price and no one else shares in the ransom price. The purchasing value is all in the merit of Christ Jesus. This same one, then, is the mediator; but since the church is made a part with Christ Jesus as members of his body, the church thereby becomes a part of the mediator, but has no part, of course, in purchasing the world."
I wonder if WT will bring this teaching back - it would suit their means.
Jesus is not my mediator. The GB is! Well according to them. NOT.
"We need to obey the faithful and discreet slave to have Jehovah’s approval." Watchtower 2011 Jul 15 p.24 Simplified English Edition